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A circle with two curved tails, spiralling the way the storm does.
Also known as: Hurricane symbol, Typhoon symbol, Spiral with two tails on a weather map
A spiral device marking a tropical cyclone, drawn with its tails curling in the direction the system rotates. Which way it curls is hemispheric, so the same storm type is drawn as a mirror image north and south of the equator.
A symbol marking a tropical cyclone on a chart: a small circle with two curved arms trailing from opposite sides, giving a spiral appearance.
Contexts: Maps
Drawn curling anticlockwise for a northern-hemisphere system and clockwise for a southern one, matching the actual rotation, so the symbol's handedness is information rather than style.
Hurricane, typhoon and cyclone name the same phenomenon in different ocean basins, so the choice of word says where the storm is and not how strong it is.
Three words, one weather system, distinguished by basin.
A small open circle with two curved arms sweeping away from opposite sides, both curling in the same rotational direction.